Cuelist, Slider, Playback Wing Input improvements

Hi,

my changes are mostly for theatre applications, it includes improvements of the cuelist, slider and the Enttec Playback Wing. 

Cuelist:

*infade/outfade/duration added to Cuelist
*Record or a Update a cuestep on the fly 

Slider (Level Mode):
*capture channels: slider flips to the actual dmx value of the channel and overwrites other values (higher or lower) created by a running chaser or cuelist.
This is usefull if a gel in your wash is burned during a show or in addition with the cuelist improvements (update step) if you for instance have to adapt your show in a guet performance.

Playback Wing Input:
*page change works including channels catching (if input fader and channel value differ after page change)
 
offtools